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Prof. Makoto IWASAKI
Nagoya Institute of Technology, Japan
IEEE Fellow

Makoto Iwasaki received the B.S., M.S., and Dr. Eng. degrees in electrical and computer engineering from Nagoya Institute of Technology, Nagoya, Japan, in 1986, 1988, and 1991, respectively. Since 1991, he has been with the Department of Computer Science and Engineering, Nagoya Institute of Technology, where he is currently a Professor at the Department of Electrical and Mechanical Engineering. As professional contributions of the IEEE, he has been an AdCom member of IES in term of 2010 to 2019, a Technical Editor for IEEE/ASME TMech from 2010 to 2014, an Associate Editor for IEEE TIE since 2014, a Management Committee member of IEEE/ASME TMech (Secretary in 2016 and Treasurer in 2017), a Co-Editors-in-Chief for IEEE TIE since 2016, a Vice President for Planning and Development in term of 2018 to 2019, respectively. He is IEEE fellow class 2015 for "contributions to fast and precise positioning in motion controller design". He has received the Best Paper Award of Trans of IEE Japan in 2013, the Best Paper Award of Fanuc FA Robot Foundation in 2011, the Technical Development Award of IEE Japan in 2017, the Nagamori Awards in 2017, the Ichimura Prize in Industry for Excellent Achievement of Ichimura Foundation for New Technology in 2018, the Technology Award of the Japan Society for Precision Engineering in 2018, and the Commendation for Science and Technology by the Japanese Minister of Education in 2019, respectively. His current research interests are the applications of control theories to linear/nonlinear modeling and precision positioning, through various collaborative research activities with industries.

Speech Title: Robust Vibration Suppression Control for Positioning Devices with Strain Wave Gearing

Abstract: The plenary lecture presents a practical robust compensator design technique for precision positioning devices including strain wave gearing. Since HarmonicDrive® gears (HDGs), typical strain wave gearing, inherently possess nonlinear properties known as Angular Transmission Errors (ATEs) due to structural errors and flexibility in the mechanisms, the ideal positioning accuracy corresponding to the apparent resolution cannot be essentially attained at the output of gearing in the devices. In addition, mechanisms with HDGs generally excite resonant vibrations due to the periodical disturbance by ATEs, especially in the condition that the frequency of synchronous components of ATE corresponds to the critical mechanical resonant frequency. The lecture, therefore, focuses on the vibration suppression in positioning, in order to improve the performance deteriorations by applying a robust full-closed control. In the compensator design, under the assumption that full-feedback positioning systems can be constructed using load-side (i.e. output of the gearing) sensors, an H_inf compensator design has been adopting to shape frequency characteristics on the mechanical vibration, with robust control properties against parameter variations. The proposed approach has been applied to precision motion control of actual devices as servo actuators, and verified through numerical simulations and experiments.

 

Prof. Naoyuki Ishimura, 
Chuo University, Japan

Prof. Naoyuki Ishimura was born in Tokushima, Japan in 1964. He obtained his bachelor's degree of Physics in 1986 and master's degree of Mathematics in 1989 both at University of Tokyo, Japan. He obtained his PhD from University of Tokyo in 1993 with the title ''Analytic properties of mean curvature flows." He was Research Associate of Mathematics at University of Tokyo from 1989 to 1996. He moved to Hitotsubashi University, Japan as Associate Professor of Mathematical Sciences from 1996 and became full Professor from 2005. His interest gradually involves Mathematical Finance and he was a director of CFEE (Center for Financial Engineering Education) at Graduate School of Economics, Hitotsubashi University from 2011 to 2015. He now moves to Chuo University from 2015. Prof. Ishimura is a member of JSIAM (Japan Society for Industrial and Applied Mathematics) and a representative of Mathematical Finance study group. His area of research includes the applied analysis, the theory of nonlinear partial differential equations, and the mathematical finance.

Speech Title: On the estimation of Value at Risk for the portfolio problem involving copulas
Abstract:
Value at Risk (VaR) is one of widely known measures of risk in the field of finance. We here consider the estimation of VaR for the portfolio problem. The evaluation is undertaken in two approaches; one is a standard way and the other is a copula-based method. Our innovative point is the latter, which uses copulas to analyze the dependence relation between random variables. We show numerically that the copula-based method works better than the former standard one. This is joint work with Dr Andres Mauricio Molina Barreto.

 

Prof. Kuo-Chih Chuang,
Zhejiang University, China
Executive Director, Equipment Structure Health Monitoring and Early Warning,
CHINA INSTRUMENT AND CONTROLSOCIETY

Kuo-Chih Chuang received the M.S. and Ph.D. degrees in mechanical engineering from National Taiwan University, Taiwan, in 2002 and 2008, respectively. He was a recipient of the Ph.D. Dissertation Award of the Chinese Society of Mechanical Engineers in 2008. The title of the Ph. D. dissertation is “Development of Multidimensional, High Resolution Fiber Bragg Grating Dynamic Displacement and Strain Sensing System for Measurement of Transient Wave Propagation.” From 2008 to 2010, he held a postdoctoral position with the Department of Mechanical Engineering, National Taiwan University. In 2010, he joined the Faculty of the Institute of Applied Mechanics, Zhejiang University, China, where he is currently an Associate Professor. He is the Executive Director of the equipment structure health monitoring and early warning in CHINA INSTRUMENT AND CONTROLSOCIETY. His current research interests include phononic crystals, elastic metamaterials, fiber Bragg grating sensors, and structural health monitoring.

Speech Title: Design and sensing of tunable elastic metamaterial/phononic crystal beams
Abstract:
Due to their capabilities of manipulating elastic waves, metamaterials and phononic crystals (PC) have gained much attention recently. One of the important characteristic in the elastic metamaterial/PC beams is the existence of the frequency band gaps, in which propagation of the elastic waves are forbidden. To allow the band gaps to be tunable and switchable, we design metamaterial beams based on shape memory alloys. We also design tunable metamaterials using the concept of altering moment of inertia, which we realize a continuous tunable band gap. All the transmissions are measured by the fiber Bragg grating displacement sensing system developed by the speaker. Compared to flexural band gaps, torsional band gaps of periodic structures are seldom experimentally investigated. This is due to the fact that detecting torsional vibrations usually requires setting up complicated sensors such as electromagnetic acoustic transducers. We finally detect accurate transient short time responses and the torsional vibration band gaps by setting up a pair of fiber Bragg gratings (FBGs) on a phononic crystal (PC) beam whose responses are self-demodulated without any other matching filters.

 

Speakers in 2021 to be announced soon......

 

 


2021 11th International Conference on Applied Physics and Mathematics | February 01-03, 2021 | Shanghai, China